Package



June 15,' 1943. o. H. HULTIN 2,321,681

PACKAGE Filed Aug; 16, 1941 2 Sheets-Sheet i INVENTOR 694. can.

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ATTORN Y vJun 15, 9 3 o. H. HULTIN 2,321,681

PACKAGE Filed Aug. 16, 1941 2 Sheets-Sheet 2 INVENTOR can H. W BY QMQAQATTORNEY Patented June 15, 1943 UNITED STATES PATENT I OFFICE menaceOscar H. Hultin, Quincy, Mass., assignor to Pneumatic Scale Corporation,Limited, Quincy, Masa, a corporation of Massachusetts Application August16, 1941, Serial No. 407,165

2 Claims.

This invention relates to a package.

" One object of the invention is to provide a novel and improvedconstruction of package adapted to be closed and sealed in a novelmanner to effectively seal the contents of the package.

A further object of the invention is to provide a novel and improvedlined package in which provision is made for closing and sealing themouth of the. liner in a novel and improved manner.

With these general objects in view and such others as may hereinafterappear, the invention consists in the package hereinafter described andparticularly defined in the claims at.the end of this specification.

In the drawings illustrating the preferred embodiments of the invention,Fig. 1 is a perspective view of a lined package showing one form of topclosure for the lining embodied in the present package; Fig. 2 is asimilar view showing one of the closing flaps 0f the carton closed uponthe top of the lining bag; Fig. 3 is a perspective view of a completelyclosed and sealed package embodying the present invention; Fig. 4 is aperspective view illustrating one step in the formation of the liningtop closure illustrated in Fig. 1; Figs. 5 and 6 are cross-sectionalviews showing the steps followed in folding and overfolding the liningclosure shown in Fig. 4; Fig. 7 is a perspective view of the lining topclosure just prior to being folded as illustrated in Fig. 1; Fig. 8 is aperspective view of a lined package embodying the present inventionshowing another form of top closure for the mouth of the lining; Fig. 9is a similar view showing the folded closure laid against the top of thepackage; Fig. 10 is a perspective view illustrating the manner in whichthe mouth of the lining is spread and provided with adhesive togetherwith one of the carton closing flaps to form a sealed closure for thelining; Fig. 11 is a cross-sectional view through the packageillustrated in Fig. 10 showing the construction after it has been closedand sealed; Fig. 12 is a perspective view similar to Fig. '10illustrating another form of seal for the mouth of the lining; and Fig.13 is a cross-sectional view similar to Fig. 11 showing the constructionof the package shown in Fig. 12 after it has been completely closed andsealed.

In general, the present invention contemplates the provision of a linedpackage comprising a lined carton having a novel and improved topclosure which is characterized by the provision of but two opposedclosing flaps for the top of the carton and in which the mouth of thelining is provided with a closure such as to reduce to a minimum theliability of leakage of the material therethrough. One of the preferredforms of closure for the mouth of the inner bag or lining comprises anelongated fold formed by folding outwardly the opposite end portions. ofthe extended top of the lining to provide a continuous closure from oneside of the bag to the other. Thereafter, the upstanding closure thusformed may be folded down into engagement with the top of the lining bagto effectively seal the contents therein. Another preferred form of topclosure for the mouth of the lining bag may be formed by foldinginwardly two opposed end portions of the extended top of the lining bagto form a pleated closure, the mouth portion of which may be sealed'in anovel manner to effectively enclose the contents of the lining bag.

In practice, such top closures for the mouth of the lining bag arepreferably performed by suitable mechanism in a packaging machine whilethe bag is supported in the outer container or carton. When, asheretofore, the lining closure is performed while the bag is supportedin the conventional carton provided with the usual four top closingflaps comprising two opposed endflaps and two opposed side flaps,several difficulties are encountered and disadvantages result from thepresence of the two opposed narrow end flaps of the carton. In practice,the mechanism for performing the top folding operations of the mouth ofthe lining must of necessity be disposed so as to sweep through the pathof the top closing flaps of the carton so that means for bending theflaps outwardly and for retaining them in this position during thefolding operation had to be provided.

In accordance with the present invention, the

carton is provided with but two opposed top closing flaps, the narroweropposed flaps being eliminated, whereby to enable such top closures tobe more readily and conveniently performed upon existing machines inwhich the mechanism for bending the end flaps outwardly may becliminated. In addition, the elimination of the two opposed narrow endclosing flaps serves to reduce the bulk or thickness of the completedtop closure thus enabling a neater appearing package to be produced.

In order to effectively seal the carton at the ends where the closingflaps are omitted, the

present carton is provided with sealing wings upon one of the remainingside flaps which are arranged to close over the adjacent edges of thecarton to form a relatively tight and efliin Fig. 8. In accordance withthe present invention one form of top closure for the lining bag, asillustrated in Fig. 1, may be formed by folding outwardly two opposedsides ofthe extended mouth portion of the lining and pressing inwardlythe remaining two opposed sides as shown in Fig. 4, to provide anelongated upstanding tab 22' extending across the entire mouth of thebag. Thereafter, the upstanding tab 22 is folded and overfoldedas shownin Figs. 5 and 6 to present the closure in the condition illustrated inFig. 7, in which two triangular fiaps 24, 26 extend over the edge of thecarton. The triangular fiaps 24, 26 are then folded inwardly to completethe top closure of the lining bag as shown in Fig. 1.

In practice, the carton is then passed through suitable adhesiveapplying mechanism to provide a coating of adhesive over the entireinner surface of the carton side fiap I2, and upon the inner surfaces ofthe sealing wings I6, I8 of the side fiap I4. The side fiap- I4 is thenfolded inwardly over the top of the closed lining bag and the sealingwings I6, l8 are folded down and pressed into sealing engagement withthe adjacent panels of the carton as shown in Fig. 2. Finally, theremaining carton fiap I2 is closed over the fiap I4 and pressed intosealing engagement therewith to provide the completely sealed package asshown in Fig. 3. Thus, an efiicient and effective top closure for thelining and the carton is provided without the use of the usual narrowend fiaps of the carton.

Referring now to Figs. 8 to 11 inclusive, as therein shown,- anotherform of top closure for the mouth of the lining bag may be formed byfolding inwardly two opposed portions of the extended mouth of thelining bag and then bringing together the remaining two opposite sidesto form an upstanding closure or tab as shown in Fig. 8. The upstandingtab portion 30 of the closure is then folded down into engagement withthe top of the package with the upper or mouth portion 32 thereofextending over the edge of the container and resting upon a part of theside flap I2 as shown in Fig. 9. Thereafter, the side fiap I4 is foldedover on top of the lining closure and the sealing wings I6, I8 arepressed into engagement with the panels of the carton as before.

In order to provide a sealed closure for the mouth portion 32 of thelining in a simple and eflicient manner, the mouth portion extendingbeyond the edge of the closed flap I4 may be spread apart, as shown inFig. I0, one half resting fiat on top of the fiap I4 and the other halfresting on the extended flap I2. With the top closing members in thiscondition, the package may be passed through the standard adhesiveapplying mechanism to provide adhesive simultaneously over the innersurfaceof the flap I2 and upon the extended half of the mouth portion32. Thereafter the fiap I2 is folded over on top of the flap I4, thusalso folding the adhesivelyv coated half of the mouth portion 32 intocontact with the opposing half and forming a sealed closure for themouth of the lining. As illustrated in Fig. 11, the construction of thecompletely closed and sealed package provides an interlocking of themouth of the lining between the upper and lower flaps I2, I4 and enablesan adhesive seal to be provided for the mouth portion of the liningsimultaneously with the adhesive sealing of the top flap I2 intoengagement with the flap I4. In addition, a positive seal is effectedalong the opposed edges of the carton where the end fiaps are omitted,by the provision of the sealing wings I6, I8, as above described.

As illustrated in Figs. 12 and 13, a modified form of closure for themouth portion 32 of the lining bag may include a sealing strip 34 whichmay be secured over the extended mouth portion 32 and in engagement withthe inner surface of the closing fiap I2, as clearly shown in Fi 12.Thereafter, the carton closing fiap I4 provided with the sealing wingsI6, I8, is folded over the top of the lining as before and the flap I2together with the sealing strip 34 is provided with a coating ofadhesive. The completely closed and sealed carton of the modificationshown in Fig. 12 will appear as shown in Fig. 13 with the sealing strip34 and fiap I2 adhesively secured to the top of'the fiap I4, and withthe mouth portion 32 interlocked between the upper and lower cartonfiaps in a manner such as to provide a secure and positive seal of thelining bag and the outer carton.

From the above description, it will be seen that the construction of thepresent package is such as to facilitate the performance of the topclosing operation for the mouth of the lining and enables an efiicientcarton closure to be made in a manner such as to effectively seal thecontents of the container in a novel and improved manner with but two ofthe usual four carton closing fiaps.

While the preferred embodiments of the invention have been hereinillustrated and described, it will be understood that the invention maybe embodied in other forms within the scope of the following claims.

Having thus described the invention, what is claimed is:

As a new article of manufacture, a' lined package containing a commoditycomprising a carton having but two top closing fiaps formed asextensions of two opposed walls of the carton, a lining bag within thecarton having its mouth portion closed to confine the commodity therein,one of said top closing fiaps being provided with laterally'extendedsealing wings arranged to be folded down and adhesively secured to theremaining two opposed walls of the carton, the

remaining top closing fiap being adhesively secured to the top of saidfirst top closing flap.

2. As a new article of manufacture, a lined package containing acommodity comprising a carton having but two top closing flaps formed asextensions of two opposed walls of the carton, a lining bag within thecarton having the top thereof folded to form an elongated folding tabextending entirely across the mouth of the carton and projecting beyondthe opposite ends thereof, said tab being folded and overfolded intocontact with the top of the lining bag, the laterally extended endportions then being folded inwardly upon the top of the lining bag,:oneof said top closing flaps being provided with laterally extended sealingwings arranged to be folded down and adhesively secured to the remainingtwo opposed walls of the carton, the remaining OSCAR H. HULTIN.

